1. Bellwork

2. 7.3A SIMILAR TRIANGLES Students will be able to prove that two triangles are similar.

3. Hmmm?  What two things must be true in order for triangle ABC to be similar to triangle DEF?  Are they similar?

4. Proving Triangles Similar (Shortcuts) 1. AA Similarity 2. SSS Similarity 3. SAS Similarity

5. Example 1  Determine if triangles are similar and justify using a postulate.

6. Example 2  Given: Conclusion:

7. Example 3  Given:  Prove:

8. Ticket to Leave (with Partner)  Given:  Prove:

9. Homework  Worksheet